3PAR

I recently ‘enjoyed’ working on an issue where a 3PAR remote copy group issue resulted in both virtual volumes entering a read-only state. I’ve seen a similar problem where both copies go into a read-write state which is probably more worrying when it happens. Let’s take a look at the problem, the data I had … Read more

I still remember being impressed with the design and architecture of the HPE 3PAR storage system all those years ago when going through a tender process for a replacement SAN. Over time new versions of the hardware and software have been released and again I’ve been impressed and excited to see the new possibilities. I … Read more

Well this is an interesting and unexpected announcement – Hewlett Packard Enterprise (HPE) are to purchase Nimble storage. This is in addition to the recent acquisition of Simplivity which is a player in the hyperconverged market. We already have 3PAR storage arrays at various price points with the current 8200 as the entry level with … Read more

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Well HPE Discover in London was awesome – I must have left an impression last year as various HPE reps around the event remembered me. There was so much to see and I wish I’d taken more pictures but I spent more time talking to people. Let’s take a look at some of the pictures … Read more

I came across this issue while reviewing the output of the checkhealth –detail command run from the 3PAR command line. This command provides a more detailed view (as per the switch) of any health issues including those experienced in the Logical Disk (LD) subsystem. The specific error ‘LDs not mapped to a volume’ may happen … Read more

I recently setup a DNS iApp on the F5 load balancers in my datacenters and felt it was time to migrate the Hewlett Packard Enterprise (HPE) 3PAR storage arrays DNS to point to this new virtual IP (VIP) rather than to the static DNS server it currently used. I will demonstrate the command line syntax for … Read more

I finally got round to looking at a problem which has existed in one of my datacenters for I guess a few years now. It’s really bothered me for a long time but I’ve just been tied up with other projects so it remained. I have two datacenters which are more or less identical in … Read more

I’m currently working on a case with HPE (Hewlett Packard Enterprise) 3PAR support with regard to excessive retransmit errors on our Remote Copy Fibre Channel (RCFC) connection between two 7400 arrays. While troubleshooting we found that a required option was not set appropriately – namely interrupt coalescing on the RCFC ports. In this post I … Read more

This week I came across an interesting problem on one of our Microsoft Failover Clusters (FOC) which utilises the HPE Cluster Extensions (CLX) software to provide failover support with our HPE 3PAR arrays. A couple of roles within one FOC showed the CLX resource as failed with everything else still showing as online. We were … Read more

If you have used the HPE 3PAR management console (IMC) you will know that the logon prompt has a tick box for ‘Secure Connection’. In this post I will demonstrate why you should not connect without this option selected. This post is specific to the traditional IMC client which is being deprecated in favour of … Read more